diff --git a/pyproject.toml b/pyproject.toml
index 0922d7c..f2b0e6a 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -17,7 +17,7 @@ classifiers = [
     "Topic :: Office/Business :: Financial",
 ]
 dependencies = [
-    "mcp>=1.0.0",
+    "mcp>=1.0.0,<2.0.0",  # 2.0 移除了 Server 的 list_tools/call_tool decorator API（issue #16）
     "httpx>=0.27",
     "pydantic>=2.0",
 ]
diff --git a/uv.lock b/uv.lock
index 0e59493..823ecc4 100644
--- a/uv.lock
+++ b/uv.lock
@@ -1,5 +1,5 @@
 version = 1
-revision = 2
+revision = 3
 requires-python = ">=3.10"
 
 [[package]]
@@ -246,7 +246,7 @@ dev = [
 [package.metadata]
 requires-dist = [
     { name = "httpx", specifier = ">=0.27" },
-    { name = "mcp", specifier = ">=1.0.0" },
+    { name = "mcp", specifier = ">=1.0.0,<2.0.0" },
     { name = "pydantic", specifier = ">=2.0" },
     { name = "pytest", marker = "extra == 'dev'", specifier = ">=7" },
     { name = "pytest-asyncio", marker = "extra == 'dev'", specifier = ">=0.23" },